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One of the biggest software companies in real estate started with one man, an Apple II and a single customer. In 1984, Anant Yardi wrote the first version of what would become @Yardi and sold it to Sabaco Realtors. No venture funding followed. No private equity. No rush towards an exit. More than 40 years later, Yardi still owns the company he founded. Its software now supports roughly $4 trillion in real estate assets across more than 80 countries, with annual revenue reportedly above $1.6 billion. Real estate technology has changed almost beyond recognition since 1984, but Yardi took a surprisingly simple route through it. Build something useful. Keep improving it. Stay independent. Four decades later, much of the global real estate industry is running on it. @Yardi, @gemassmer

Parking tickets existed because, for decades, there wasn’t a better way for a car park to know who you were. @metropolisio changed that. Founder Alex Israel didn’t come from engineering or parking. He studied film at the American Film Institute before launching Metropolis in 2017 around a simple idea: if technology could recognise your car, you could drive in and out without tickets, barriers or cards. That idea became what Israel calls the “recognition economy”, using computer vision to make physical places recognise people and vehicles in much the same way digital platforms recognise users. Then came scale. In 2024, @metropolisio completed its roughly $1.5 billion acquisition of SP Plus, making it one of the biggest players in North American parking. Sometimes it takes someone from outside an industry to notice the everyday friction everyone inside it has learned to accept.

The Sistine Chapel was not designed for 20,000 visitors a day. Around six million people pass through it each year. Every one brings body heat, humidity, CO2 and dust into a room containing some of the world’s most valuable frescoes. The problem was understood. Controlling it without changing the experience of the space was much harder. That’s where @carrier came in. The original system, installed in 1993, was designed for around 700 visitors at a time. By 2014, the Chapel was seeing close to 20,000 people in a single day. Its replacement uses two 580 kW AquaForce chillers alongside video based visitor counting, automatically adjusting airflow as the room fills and empties. Thousands of people walk underneath Michelangelo’s work every day without noticing the system helping to protect it. Sometimes the most important technology in the built world is the technology nobody is meant to notice.

Millions of conversations between renters and AI are revealing something about the US housing market. When @minnasong built @elise_ai in 2017, the idea was to help property managers answer renter questions at any hour. But at scale, those conversations started showing something else. @elise_ai noticed how often a renter’s very first message was about money. They turned that data into what they call the Rent Anxiety Index, and it has been climbing every month since August 2024. One conversation is customer service. Millions of them become a signal. It is an interesting example of what happens when technology built to solve an operational problem starts producing insight into the people using it.

AutoCAD was renamed in six hours. In 1982, a group of programmers led by John Walker pooled just under $60,000 to start a company. They had no finished product and, for a while, no name they could incorporate under. What they did have was a small internal filing utility called Cardfile. It was renamed Autodesk because it sounded professional enough to put on the paperwork. The name stuck. The software had an equally unlikely naming journey. It started as Interact, became MicroCAD and then, on October 11, 1982, became AutoCAD in a six hour, module by module renaming job. That hastily renamed piece of software went on to help put computer aided design onto ordinary desks and turn Autodesk into a company generating billions in annual revenue. Some of the biggest names in the built world started with considerably less certainty than their scale today would suggest.

Buildings have spent decades getting better at keeping heat in. Windows barely moved… The idea for fixing that has existed since the 1960s. Seal a vacuum between two panes of glass, much like a thermos, and a window can insulate far more effectively. The physics worked. Manufacturing it at building scale did not. That is the problem LuxWall set out to solve. Founder Scott Thomsen brought experience from semiconductors and flat panel displays, industries built around producing incredibly thin materials at scale, and applied that thinking to a problem the building industry had struggled with for decades. The result is vacuum insulated glass just 8mm thick, designed to fit into existing window frames and achieve an R-18 insulation rating. Earlier this year, more than 2,000 windows at 1250 Broadway in Manhattan were replaced with the technology across the 39 storey building. Sometimes the most valuable progress in the built world comes from taking an old idea, solving the part that never worked, and finally making it viable at scale.

Hospitals, schools and offices rely on them. Software companies largely ignored them. For decades, the commercial contractors keeping buildings running were managing hospital chillers, school HVAC systems and critical infrastructure with technology that was never really designed for them. BuildOps saw the gap. The challenge wasn’t the size of the market. Contractors had been sold software before, often by people who had never experienced the realities of the job themselves. BuildOps approached it differently, building around how commercial contractors actually work. It’s a good reminder that some of the biggest technology opportunities aren’t about inventing something new. They’re sitting inside industries that have been overlooked for years. Which industries do you think are still waiting for theirs?

One Tesla factory was welcomed with tax breaks… The other one moved into the forest to stop it. Gigafactory Texas and Gigafactory Berlin opened weeks apart in 2022, but their relationships with the places around them could hardly have been more different. Austin saw more than 400 letters of public support and $64 million in county tax breaks. In Grünheide, opposition to Tesla’s expansion led to a nine month forest occupation, a local vote where 65% opposed the plans, and protests that continued long after the factory opened. Same company. Same year. Very different reception. It is a reminder that building something at this scale is as much about the relationship with a place as the project itself. Do you think Tesla could have seen the difference coming?

Before there was a bunker, there was a land dispute involving hundreds of Hawaiian families. Much of the coverage around Mark Zuckerberg’s 1,400 acre Kauai estate focuses on what is being built there. The story of how the land was assembled is arguably just as significant. In 2016, companies linked to Zuckerberg filed quiet title lawsuits over small ancestral parcels within the estate, some of which had remained in the same families since the 1850s. One case reportedly involved around 300 descendants of a single sugarcane worker. Following public backlash, Zuckerberg apologised and dropped the lawsuits in 2017. Some of the disputed parcels later went to auction anyway. Meanwhile, construction continued. Two mansions, treehouses and a 5,000 square foot underground space Zuckerberg has described as a basement. The buildings might get the headlines, but the story of a development often starts long before anything is built. Does an apology change how you view what came next?

What is really powering the AI everyone is talking about? Behind Grok is a growing network of data centres, energy infrastructure and gas turbines, and a much bigger question about the physical cost of the AI boom. In April, the NAACP filed a Clean Air Act lawsuit alleging xAI had operated gas turbines without the required permits to help power its Colossus 2 data centre. Nearby NO2 levels were reported to have risen by 79%, while xAI has disputed criticism around the site and its environmental impact. It is the latest story in The Reputation Ledger, where we look beyond the technology and at the infrastructure behind some of the world’s biggest companies. How much should that infrastructure shape the way we judge them?

They promised a zero carbon city for 50,000 people. Two decades later, Masdar City still looks very different from the original vision. Launched with a $22 billion ambition to become one of the world’s most sustainable cities, the project has been repeatedly scaled back, delayed and reworked as the realities of building at that level of ambition set in. It would be easy to call that failure. But Masdar is still growing, still attracting companies and still influencing how we think about sustainable urban development. Which makes the more interesting question less about whether the original promise was delivered, and more about how we judge ambitious projects that evolve along the way. Does unfinished mean unsuccessful?

One company. Two outcomes. Google Bay View is one of those built world stories that sounds almost too clean to be true, but says a lot about what it actually takes to get the public to trust a big, futuristic idea. When the same parent company can get applause for one project and a lawsuit for another, the line between innovation people welcome and innovation people fear starts to look very different. What would it take for you to trust something like this? 🔐

So much garbage online right now. This is definitely not. Storytelling at its best.

Wait for the full story. Zaha Hadid Architects is one of those built world stories that sounds almost too poetic to be true, but says a lot about what actually keeps a company going once the person its identity was built around is gone. When a firm can outlive the person its entire brand was named for, the line between a founder's legacy and a company's identity starts to look very different. Could your business survive without you? 🤔

Software billionaire Larry Ellison wanted a home built without a single nail. So he spent years creating a 16th-century-style Japanese estate in California, using traditional joinery, hand-finished materials and techniques rarely seen in modern construction. The result became known as Larryland. It’s an extraordinary example of what happens when almost unlimited resources meet an obsession with how something is built, not simply how it looks. There’s craftsmanship. There’s engineering. There’s also a much bigger conversation around authenticity, preservation and what it means to recreate history from scratch. This is the story behind Larryland. Comment who you want to hear about next 👇

238 cities wanted Amazon’s second headquarters. And to prove it, cities across North America offered up tax incentives, infrastructure commitments and huge amounts of information about themselves. What started as a search for HQ2 became something much bigger: a demonstration of just how much influence a company of Amazon’s scale can have over the places competing for its investment. Cities weren’t simply pitching buildings. They were pitching talent, transport, development plans and their vision for future growth. Amazon eventually chose New York and Northern Virginia, although the New York deal famously unravelled. The whole process left behind a fascinating question about who holds the power when the world’s biggest companies go looking for somewhere to call home. We suspect the answer has changed quite a bit.

The world’s tallest building borrowed its shape from a flower. When engineers were designing the Burj Khalifa, one of their biggest challenges was something they couldn’t control: the wind. Part of the answer came from the Hymenocallis, a desert flower whose structure helped inspire the building’s distinctive three-lobed footprint. At 828 metres tall, one of the most ambitious feats of modern engineering owes part of its design thinking to something that had been growing naturally for centuries. There’s something brilliant about that. For all the technology changing how we build, nature still has a few billion years of R&D on us.